A soil disinfector comprising an insulating endless belt with at least one row of positive electrodes and at least one row of negative electrodes mounted on the endless belt. The electrodes are mounted with their heads on the inside of the belt and their bodies pointing outward from the belt, the electrodes being configured to penetrate the soil. The electrodes take their power from a power source, the power source being connected to the electrodes via sets of rows of rollers and sets of rows of stationary conductive contact plates, at least one set of each being positive and at least one set of each being negative. The soil disinfector also has sensors to detect soil conditions and a processor to alter power applied to the soil based on the soil conditions.

A permeable reactive barrier having two or more layers of a geotextile fabric inoculated with a bioremediation microbe is provided. The permeable reactive barrier further includes two or more layers of coarse-grained geological material separating the two or more layers of geotextile fabric such that any pair of adjacent layers of geotextile fabric is separated by a layer of coarse-grained geological material. The permeable reactive barrier includes a perforated metal casing surrounding and containing the layers of coarse-grained geological materials and geotextile fabric.

A method of sorbing a PFAS compound from a contaminated environment can include admixing a modified clay sorbent with the environment. The modified clay can include a clay intercalated with a blend of mono-quaternary amine compound and di-quaternary amine compound.

Platforms, platform systems, and safety grates and related methods used to facilitate the installation of plant-based remediation systems are provided therein. A platform system can include a platform having a frame supporting a flooring structure that has a surface on which a worker can stand. The platform and flooring structure can have central aperture therein. The platform system can also include a sleeve frame positioned proximal to the central aperture. The sleeve frame can have sleeve clamps securable thereto for holding a sleeve ring round at least a portion of the central aperture and to hold a liner sleeve to the sleeve ring. Further, the platform system can also include a safety grate attachable to the platform. The safety grate can comprise a grid of crossbars with folding funnel guideboards secured to the grid of crossbars for funneling soil when backfilling the liner sleeve once the liner sleeve is placed in an excavated hole.

A process is provided for separating hydrophobic material from a mixture of hydrophobic and hydrophilic material using peptide-based amphiphilic organogelators.

The invention relates to a method for disinfecting soils or other agricultural growing media, characterised by comprising the following steps: obtaining a soil or other agricultural growing medium at their field capacity; treating the soil or medium at the field capacity of the previous step with ozonated water, wherein the ozonated water is prepared in situ with ozone-production equipment connected to the water supply; allowing a period of time to pass after the treatment with ozone; and inoculating the disinfected soil or agricultural medium with at least one species of beneficial microorganism.

An in-situ reagents injection system comprises a compressed air storage tank, a remediation reagents storage tank, an injection adjusting valve, an injection pipe, an upper sealing device and a lower sealing device. When the reagents injection is carried out, the compressed air is injected before the remediation reagents is injected, the porosity of the aquifer medium is increased by utilizing the air pressure expansion technology to form a relatively uniform dominant channel, and the remediation reagents is injected to realize uniform and efficient conveying of the reagents. The in-situ reagents injection system and method can make the homogeneous and efficient conveying of the remediation reagents, and ensure the full utilization of the remediation reagents, with low energy consumption of injection equipment, simple process, and flexible operation. The injection is performed in sections from top to bottom according to the steps to improve the in-situ reagents injection efficiency and remediation efficiency.

A method for preparing the ferrous sulfide-containing passivator includes: dissolving a sulfide in an alkaline solution to form a mixed solution with a pH of 12-13; adding sodium silicate to the mixed solution and stirring for 0.5-1 hour at 20-40° C.; adding an aqueous solution of ferrous salt to the mixed solution containing sodium silicate, and allowing to react at 40-60° C. for 2-3 hours; where, with decrease of the pH of the mixed solution, sodium silicate is converted into silica nanoparticles, and the ferrous salt reacts with the sulfide to form ferrous sulfide; and further adding an aqueous solution of an organic modifier, and allowing to react at 40-60° C. for 1-2 hours to form a passivator slurry including surface-modified ferrous sulfide doped with silicon dioxide; filtering the passivator slurry to form a passivator.

A composition for remediation of soil and groundwater containing halogenated compounds. The remediation composition includes an elemental iron-based composition, which may include activated carbon capable of absorbing the halogenated compounds with numerous pores impregnated with elemental iron. The remediation composition further includes a first bioremediation material including a blend of one-to-many organisms capable of degrading the halogenated compounds. The remediation composition includes an organic compound or polymeric substance and a second bioremediation material including a blend of one-to-many organisms capable of degrading the organic compound or polymeric substance over time (e.g., 20 to 365 or more days to provide a time release substrate-creating material or platform) into smaller molecules or compounds used by the organisms in the first bioremediation material while degrading the halogenated compounds. The organic compound may be a complex carbohydrate such as food grade starch, chitin, or other complex carbohydrate such as one with low water solubility.

A composition for stimulating the production and excretion of a lignolytic enzyme in a microorganism for degrading harmful substances and/or in the manufacturing of easily degradable ester containing plastics or articles made of ester containing plastic. The composition mainly includes tributyrin, triolein, fish oil, 16-hydroxyhexadecanoic acid, n-aliphatic primary fatty alcohols, polycaprolactone, aliphatic polyesters, linolenic acid, linoleic acid, alpha linolenic acid, plant polyesters, cutin, cutin derivatives, cutin monomers, omega hydroxy acids, 16-hydroxy palmitic acid, 9,16-dihydroxypalmitic acid, 10,16-dihydroxypalmitic acid, C18-hydroxy oleic acid, 9,10-epoxy-18-hydroxy stearic acid, 9,10,18-trihydroxystearate, suberin, cork, fruit skins, vegetable skins, and their constituents and derivatives, hydroxy fatty acids, 16-hydroxy palmitic acid, 18-hydroxy stearic acid, juniperic acid, hexadecanol, linseed oil, perilla oil, amides, acetamide and N-acetyl amide, zinc, zinc salts, butyrate, acetate, lactate, manganese peroxidase, and carbamide peroxide.